CN212142171U - Efficient liquid drop generating device - Google Patents
Efficient liquid drop generating device Download PDFInfo
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- CN212142171U CN212142171U CN202020232786.0U CN202020232786U CN212142171U CN 212142171 U CN212142171 U CN 212142171U CN 202020232786 U CN202020232786 U CN 202020232786U CN 212142171 U CN212142171 U CN 212142171U
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Abstract
The utility model belongs to the technical field of the liquid drop is micro-fluidic, more specifically relates to an efficient liquid drop generates device. Comprises a dispersed phase inlet layer and a droplet generation layer; the system also comprises two-stage or multi-stage continuous phase grading layers which are connected by N input ends and output ends in a tree structure, and two-stage or multi-stage dispersed phase grading layers which are connected by N input ends and output ends in a tree structure; wherein N is a natural number and is more than or equal to 3; the output end of each dispersed phase grading layer is connected with a dispersed phase inlet layer, and each dispersed phase inlet layer is connected with a liquid drop generation layer; the output ends of the continuous phase grading layers are connected with the liquid drop generating layers one by one. The utility model provides a pair of efficient liquid drop generating device, liquid channel condition everywhere is the same completely, and the liquid drop of formation has better homogeneity and uniformity, simultaneously, sets up through the layering level, has effectively improved production efficiency.
Description
Technical Field
The utility model belongs to the technical field of the liquid drop is micro-fluidic, more specifically relates to an efficient liquid drop generates device.
Background
The droplet microfluidic technology is an important branch of the microfluidic technology field, and is that a fluid is dispersed in another immiscible fluid in the form of droplets, and the droplets are used as a basic operation and reaction unit. The liquid drop micro-fluidic has unique advantages, can be widely applied to the fields of biology, chemistry, material science, engineering and the like, and has great application prospect. For example, the currently commercialized droplet PCR can be greatly shortened in time, the micro-droplets can be used as a micro-reactor to perform efficient detection and screening of trace chemicals, and the droplet microfluidics can realize highly uniform preparation of materials.
The realization of the efficient and uniform preparation of the micro-droplets is the premise of the realization of the application of the micro-droplets, and the uniform preparation of the droplets can be realized by adopting the micro-fluidic technology at present, but the general problems of low efficiency, difficult yield meeting the requirements of industrial production and use and serious restriction on the wide application of the micro-droplets, especially the application in the engineering field exist. Therefore, it is highly necessary to improve the efficiency of uniform droplet formation.
Microfluidic droplet generation technology utilizes the interaction between flow shear force and surface tension to segment a continuous fluid into droplets of discrete nanoliter and subvolume, which are formed at the intersection of two fluids. At present, the yield of liquid drops is improved by concentrating a plurality of structures, and in a planar structure, due to the limitation of space, the integration level is relatively low, and the generation efficiency needs to be further improved; the liquid drop generation efficiency can be improved by using a three-dimensional integrated structure, but the problems of poor consistency of the end structure, relatively low integration level and the like generally exist.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the defect among the above-mentioned prior art, provide an efficient liquid drop generating device, all carried out the hierarchical design to disperse phase and continuous phase, effectively improved production efficiency.
In order to solve the technical problem, the utility model discloses a technical scheme is: a high efficiency droplet generation device comprising a dispersed phase inlet layer, a droplet generation layer; the system also comprises two or more stages of continuous phase hierarchical layers which are connected by output ends with N equal positions at one input end in a tree structure, and two or more stages of dispersed phase hierarchical layers which are connected by output ends with N equal positions at one input end in a tree structure; wherein N is a natural number and is more than or equal to 3; the output end of each dispersed phase grading layer is connected with a dispersed phase inlet layer, and each dispersed phase inlet layer is connected with a liquid drop generation layer; the output ends of the continuous phase grading layers are connected with the liquid drop generating layers one by one. In the production process, the specific grading number n of the dispersed phase and the continuous phase can be selected according to the requirement, the specific number of the dispersed phase and the continuous phase at each grade can be selected according to the production requirement, and the final production efficiency is determined by the grading number and the number of each grade; through the device provided by the utility model, when producing, only need a disperse phase input port and a continuous phase input port can, just can produce N simultaneouslynA droplet, so that the generation efficiency is improved to NnIn addition, because the continuous phase and the disperse phase are provided with only one input port, only one pump is needed to be used at the two input ports respectively during production, and thus, all conditions of all the end channels are completely the same, and the sizes of the liquid drops generated in all the liquid drop generating channels are consistent. To sum up, the utility model provides a liquid drop generating device can guarantee to have higher generation efficiency again when guaranteeing the liquid drop homogeneity.
Furthermore, the upper surface of the liquid drop generation layer is provided with a continuous phase channel, the center of the continuous phase channel is provided with a flow guide port, the continuous phase channels are radially distributed from the center of the flow guide port to the periphery, and the tail end of each continuous phase channel is provided with a liquid drop generation channel which is communicated up and down; the top of the droplet generation channel is communicated with the dispersed phase inlet layer, and the bottom of the droplet generation channel is used for connecting a droplet collection pipeline; a continuous phase inflow pipeline communicated with the diversion port is also arranged in the liquid drop generation layer; and the continuous phase inflow pipelines are correspondingly connected with the output ends of the continuous phase hierarchical layers one by one.
Furthermore, a dispersed phase inlet pipeline is arranged at the top of the dispersed phase inlet layer, a plurality of dispersed phase channels are arranged on a bottom plate at the bottom of the dispersed phase inlet layer, the dispersed phase channels are communicated with the droplet generation channels in a one-to-one correspondence manner, and the dispersed phase inlet pipeline is connected with the output ends of the dispersed phase grading layers in a one-to-one correspondence manner. The dispersed phase solution flows into the dispersed phase inlet layer from the dispersed phase inlet pipeline and then flows out through the dispersed phase channel; a plurality of disperse phase channels are arranged and are communicated with the droplet generation channels one by one; the split flow of the dispersed phase solution is realized, and the simultaneous generation of a plurality of dispersed phases is realized.
Furthermore, each disperse phase channel is connected with a guide pipe, and the guide pipe extends into the liquid drop generation channel. A diversion pipe is connected to the dispersed phase channel, on one hand, the dispersed phase is convenient to form liquid drops; on the other hand, the continuous phase solution flows to the flow guide pipe from the periphery of the flow guide pipe, then is converged with the dispersed phase to wrap the dispersed phase, and the dispersed phase generates liquid drops under the shearing action of the flowing continuous phase.
Furthermore, the honeycomb duct is in a cone structure, one side of the bottom surface of the cone is connected with the bottom of the disperse phase channel, and one side of the tip of the cone extends into the liquid drop generating channel.
Furthermore, the dispersed phase grading layer and the continuous phase grading layer have the same structure and respectively comprise a grading layer inlet and a plurality of grading layer outlets. The outlet of each grading layer is connected with the inlet of the next grading layer, and the number of final output ports is increased step by step through the tree-shaped connection mode, so that the production efficiency is improved.
As another embodiment of the present invention, further, a continuous phase inlet pipe is provided at the top of the droplet generation layer, and a plurality of droplet generation channels are provided at the bottom of the droplet generation layer; the top of the disperse phase inlet layer is provided with a disperse phase inlet pipeline, a bottom plate at the bottom of the disperse phase inlet layer is provided with a plurality of disperse phase channels, and the disperse phase channels extend into the droplet generation layer one by one through the disperse phase pipeline and penetrate through the droplet generation channels one by one; and a gap for continuous phase circulation is arranged between the droplet generation channel and the dispersed phase pipeline.
Furthermore, the tail end of each dispersed phase pipeline is connected with a guide pipe which is positioned in the liquid drop generating channel; the diversion pipe is in a cone structure, one side of the bottom surface of the cone is connected with the bottom of the disperse phase channel, and one side of the tip of the cone extends into the liquid drop generating channel.
Compared with the prior art, the beneficial effects are: the utility model provides a pair of efficient liquid drop generating device generates each branch road of liquid drop, and the liquid drop of formation has better homogeneity and uniformity, simultaneously, sets up through the layering level, has effectively improved production efficiency.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of the connection relationship between the dispersed phase inlet layer and the droplet generation layer in example 1 of the present invention.
Fig. 3 is a schematic structural diagram of a dispersed phase inlet layer in example 1 of the present invention.
Fig. 4 is a schematic view of a droplet generation layer structure according to embodiment 1 of the present invention.
Fig. 5 is a schematic structural view of a continuous phase graded layer or a dispersed phase graded layer according to embodiment 1 of the present invention.
Fig. 6 is a schematic view of the overall structure of embodiment 2 of the present invention.
Fig. 7 is a schematic structural diagram of a connection structure of a dispersed phase pipeline and a droplet generation layer in embodiment 2 of the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the invention; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the invention.
Example 1
As shown in fig. 1 to 5, a high-efficiency droplet generating device includes a dispersed phase inlet layer 1, a droplet generating layer 2; the device also comprises a two-stage or multi-stage continuous phase grading layer 4 and a two-stage or multi-stage dispersed phase grading layer 3, wherein the two-stage or multi-stage continuous phase grading layer 4 is formed by connecting N input ends and N output ends in a tree structure; wherein N is a natural number and is more than or equal to 3; the output end of each dispersed phase grading layer 3 is connected with a dispersed phase inlet layer 1, and each dispersed phase inlet layer 1 is connected with a liquid drop generation layer 2; the output ends of the continuous phase classification layers 4 are connected one by one to the droplet generation layer 2. All the layers are communicated through interlayer pipelines 5. In the production process, the specific grading number n of the dispersed phase and the continuous phase can be selected according to the requirement, the specific number of the dispersed phase and the continuous phase at each grade can be selected according to the production requirement, and the final production efficiency is determined by the grading number and the number of each grade; through the device provided by the utility model, when producing, only need a disperse phase input port and a continuous phase input port can, just can produce N simultaneouslynIn addition, because the continuous phase and the disperse phase are provided with only one input port, only one liquid supply pump is needed to be respectively used at the two input ports during production, so that the conditions of all channels are completely consistent, and the generated liquid drops have better uniformity. To sum up, the utility model provides a liquid drop generating device can guarantee to have higher generation efficiency again when guaranteeing the liquid drop homogeneity.
As shown in fig. 2 and 4, the upper surface of the droplet generation layer 2 is provided with a continuous phase channel 21, the center is provided with a diversion port 22, the continuous phase channels 21 are radially distributed from the center of the diversion port 22 to the periphery, and the tail end of each continuous phase channel 21 is provided with a droplet generation channel 23 which is through up and down; the top of the droplet generation channel 23 is communicated with the dispersed phase inlet layer 1, and the bottom is used for connecting a droplet collection pipeline; a continuous phase inflow pipe 24 communicated with the diversion port 22 is further provided inside the droplet generation layer 2; the continuous phase inflow pipes 24 are connected to the output ends of the continuous phase fractionation layers 4 in a one-to-one correspondence.
As shown in fig. 2 and 3, a dispersed phase inlet pipe 11 is arranged at the top of the dispersed phase inlet layer 1, a plurality of dispersed phase channels 12 are arranged on a bottom plate at the bottom of the dispersed phase inlet layer 1, the dispersed phase channels 12 are in one-to-one correspondence with the droplet generation channels 23, and the dispersed phase inlet pipes 11 are in one-to-one correspondence with the output ends of the dispersed phase graded layer 3. The dispersed phase solution flows into the dispersed phase inlet layer 1 from the dispersed phase inlet pipeline 11 and then flows out through the dispersed phase channel 12; a plurality of disperse phase channels 12 are arranged and are communicated with the droplet generation channels 23 one by one; the split flow of the dispersed phase solution is realized, and the simultaneous generation of multiple dispersed phases is realized.
As shown in fig. 2 and 3, a flow guide tube 13 is connected to each dispersed phase passage 12, and the flow guide tube 13 extends into the droplet generation passage 23. A diversion pipe 13 is connected on the dispersed phase channel 12, on one hand, the dispersed phase is convenient to form liquid drops; on the other hand, the continuous phase solution flows to the flow guide pipe 13 from the periphery of the flow guide pipe 13, then is converged with the dispersed phase to wrap the dispersed phase, and the dispersed phase generates liquid drops under the shearing action of the flowing continuous phase.
Wherein, the draft tube 13 is a cone structure, and one side of the bottom surface of the cone is connected with the bottom of the disperse phase channel 12, and one side of the tip end extends into the liquid drop generating channel 23.
The working principle is as follows:
as shown in fig. 1, the description will be made with the number of stages of the dispersed phase graded layer 3 and the number of layers n of the continuous phase graded layer 4 being 2;
1. the dispersed phase flow is introduced from the inlet of the classification layer of the primary dispersed phase classification layer 31, introduced into the inlet of the classification layer of the secondary dispersed phase classification layer 32 through the outlet of the classification layer of the primary dispersed phase classification layer 31, and then flows into the secondary dispersed phase classification layer 32, then flows into the dispersed phase inlet pipe 11 of the dispersed phase inlet layer 1 through the outlet of the classification layer of the secondary dispersed phase classification layer 32, and then flows into the droplet generation channel 23 through the dispersed phase channel 12;
2. meanwhile, the continuous phase fluid flows in from the inlet of the grading layer of the primary continuous phase grading layer 41, is guided into the inlet of the grading layer of the secondary continuous phase grading layer 42 through the outlet of the grading layer of the primary continuous phase grading layer 41, and flows into the secondary continuous phase grading layer 42; the continuous phase fluid flows into the continuous phase inflow conduit 24 of the droplet generation layer 2 through the outlet of the second-stage continuous phase fractionation layer 42, flows into each continuous phase channel 21 through the diversion port 22, and flows into the droplet generation channel 23 through the continuous phase channel 21;
3. the dispersed phase forms liquid drops at the tip of the draft tube 13, the continuous phase flows from the outside of the draft tube 13 to the tip to wrap the dispersed phase, and the dispersed phase generates liquid drops under the shearing action of the flowing continuous phase.
The utility model discloses in, disperse phase fluid and continuous phase fluid equally divide and do not flow in from an entry, finally flow from a plurality of exports, and every export homogeneous one corresponds and is connected with liquid drop generation layer 2 and disperse phase entry layer 1, has both guaranteed that the condition of each passageway is completely unanimous, has guaranteed the homogeneity of the liquid drop of generation, has also effectively improved generation efficiency.
Example 2
As shown in fig. 6 and 7, a high-efficiency droplet generating apparatus includes a dispersed phase inlet layer 1, a droplet generating layer 2; the device also comprises a two-stage or multi-stage continuous phase grading layer 4 and a two-stage or multi-stage dispersed phase grading layer 3, wherein the two-stage or multi-stage continuous phase grading layer 4 is formed by connecting N input ends and N output ends in a tree structure; wherein N is a natural number and is more than or equal to 3; the output end of each dispersed phase grading layer 3 is connected with a dispersed phase inlet layer 1, and each dispersed phase inlet layer 1 is connected with a liquid drop generation layer 2; the output ends of the continuous phase classification layers 4 are connected one by one to the droplet generation layer 2. All the layers are communicated through interlayer pipelines 5. In the production process, the specific grading number of the dispersed phase and the continuous phase can be selected according to the requirement, the specific number of the dispersed phase and the continuous phase at each grade can be selected according to the production requirement, and the final production efficiency is determined by the grading number and the number of each grade; through the utility model provides a device, when production, only need a disperse phase input port and a continuous phase input port can, just can produce a plurality of liquid drops simultaneously, effectively improved production efficiency, in addition, because continuous phase and disperse phase all only have an input port, only need in production like this use respectively at two input ports respectively a feed pump can, like this, the condition of each passageway is the same completely, the liquid drop of formation has better homogeneity. To sum up, the utility model provides a liquid drop generating device can guarantee to have higher generation efficiency again when guaranteeing the liquid drop homogeneity.
Wherein a continuous phase inlet pipe 25 is arranged at the top of the droplet generation layer 2, and a plurality of droplet generation channels 23 are arranged at the bottom of the droplet generation layer 2; the top of the disperse phase inlet layer 1 is provided with a disperse phase inlet pipeline 11, a bottom plate at the bottom of the disperse phase inlet layer 1 is provided with a plurality of disperse phase channels 12, and the disperse phase channels 12 extend into the droplet generation layer 2 one by one through the disperse phase pipelines 14 and penetrate through the droplet generation channels 23 one by one; and a gap for continuous phase circulation is arranged between the droplet generation channel 23 and the disperse phase pipeline 14.
Wherein, the tail end of each disperse phase pipeline is connected with a draft tube 13, and the draft tube 13 is positioned in the liquid drop generating channel 23; the draft tube 13 is a cone structure, one side of the bottom surface of the cone is connected with the bottom of the disperse phase channel 12, and one side of the tip end of the cone extends into the liquid drop generating channel 23.
Compared with the embodiment 1, the embodiment 2 has simpler structure, the dispersed phase grading layer 3 and the continuous phase grading layer 4 are arranged on the same side, the space is saved, the operation is convenient, and in addition, the finished product liquid drops are convenient to collect.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A high efficiency droplet generation device comprising a dispersed phase inlet layer (1), a droplet generation layer (2); the device is characterized by also comprising a two-stage or multi-stage continuous phase grading layer (4) formed by connecting N input ends in a tree structure, and a two-stage or multi-stage dispersed phase grading layer (3) formed by connecting N input ends in a tree structure; wherein N is a natural number and is more than or equal to 3; the output end of each dispersed phase grading layer (3) is connected with a dispersed phase inlet layer (1), and each dispersed phase inlet layer (1) is connected with a liquid drop generation layer (2); the output ends of the continuous phase grading layers (4) are connected with the liquid drop generation layer (2) one by one.
2. The efficient liquid droplet generating device according to claim 1, wherein the upper surface of the liquid droplet generating layer (2) is provided with a continuous phase channel (21), a diversion port (22) is arranged at the center of the continuous phase channel, the continuous phase channels (21) are radially distributed from the center of the diversion port (22) to the periphery, and the tail end of each continuous phase channel (21) is provided with a liquid droplet generating channel (23) which is through up and down; the top of the droplet generation channel (23) is communicated with the dispersed phase inlet layer (1), and the bottom of the droplet generation channel is used for connecting a droplet collection pipeline; a continuous phase inflow pipeline (24) communicated with the diversion port (22) is also arranged in the liquid drop generation layer (2); the continuous phase inflow pipelines (24) are correspondingly connected with the output ends of the continuous phase grading layers (4) one by one.
3. The efficient droplet generation device according to claim 2, wherein a dispersed phase inlet pipe (11) is arranged at the top of the dispersed phase inlet layer (1), a plurality of dispersed phase channels (12) are arranged on a bottom plate at the bottom of the dispersed phase inlet layer (1), the dispersed phase channels (12) are in one-to-one correspondence communication with the droplet generation channels (23), and the dispersed phase inlet pipe (11) is in one-to-one correspondence connection with the output ends of the dispersed phase graded layer (3).
4. A high efficiency droplet generator according to claim 3, wherein a flow guide (13) is connected to each dispersed phase channel (12), said flow guide (13) extending into the droplet generator channel (23).
5. The efficient device for generating droplets of claim 4, wherein the flow guide tube (13) is a cone structure, and one side of the bottom surface of the cone is connected with the bottom of the dispersed phase channel (12), and one side of the tip of the cone extends into the droplet generation channel (23).
6. A highly efficient liquid droplet generator as claimed in any of claims 1 to 5 wherein said dispersed phase graded layer (3) and continuous phase graded layer (4) are of the same construction and each comprises a graded layer inlet and a plurality of graded layer outlets.
7. A high efficiency droplet generation device according to claim 1, wherein a continuous phase inlet conduit (25) is provided at the top of the droplet generation layer (2), and a plurality of droplet generation channels (23) are provided at the bottom of the droplet generation layer (2); the top of the disperse phase inlet layer (1) is provided with a disperse phase inlet pipeline (11), a bottom plate at the bottom of the disperse phase inlet layer (1) is provided with a plurality of disperse phase channels (12), and the disperse phase channels (12) extend into the droplet generation layer (2) one by one through the disperse phase pipelines (14) and penetrate through the droplet generation channels (23) one by one; and a gap for continuous phase circulation is arranged between the droplet generation channel (23) and the disperse phase pipeline (14).
8. The efficient droplet generator according to claim 7, wherein a flow guide tube (13) is connected to the end of each dispersed phase pipe (14), the flow guide tube (13) being located in the droplet generating channel (23); the honeycomb duct (13) is in a cone structure, one side of the bottom surface of the cone is connected with the bottom of the disperse phase channel (12), and one side of the tip end of the cone extends into the liquid drop generating channel (23).
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